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Merge branch 'develop' into feature/gpu-port

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Peter Boyle
2018-12-13 05:11:34 +00:00
parent adbdc4e65b c509bd3fe2
commit b57a4d32aa
647 changed files with 49155 additions and 11160 deletions
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Grid/algorithms/approx/MultiShiftFunction.h Normal file
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/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: ./lib/algorithms/approx/MultiShiftFunction.h
Copyright (C) 2015
Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
Author: Peter Boyle <paboyle@ph.ed.ac.uk>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
See the full license in the file "LICENSE" in the top level distribution directory
*************************************************************************************/
/* END LEGAL */
#ifndef MULTI_SHIFT_FUNCTION
#define MULTI_SHIFT_FUNCTION
NAMESPACE_BEGIN(Grid);
class MultiShiftFunction {
public:
int order;
std::vector<RealD> poles;
std::vector<RealD> residues;
std::vector<RealD> tolerances;
RealD norm;
RealD lo,hi;
MultiShiftFunction(int n,RealD _lo,RealD _hi): poles(n), residues(n), lo(_lo), hi(_hi) {;};
RealD approx(RealD x);
void csv(std::ostream &out);
void gnuplot(std::ostream &out);
void Init(AlgRemez & remez,double tol,bool inverse)
{
order=remez.getDegree();
tolerances.resize(remez.getDegree(),tol);
poles.resize(remez.getDegree());
residues.resize(remez.getDegree());
remez.getBounds(lo,hi);
if ( inverse ) remez.getIPFE (&residues[0],&poles[0],&norm);
else remez.getPFE (&residues[0],&poles[0],&norm);
}
// Allow deferred initialisation
MultiShiftFunction(void){};
MultiShiftFunction(AlgRemez & remez,double tol,bool inverse)
{
Init(remez,tol,inverse);
}
};
NAMESPACE_END(Grid);
#endif